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dainte

(★ 102)

Painless testing for Svelte components

파일 탐색기

최종 버전 다운로드 (.zip)

- config.yml
- - ci.yml
  - publish.yml
- index.js
- - Dom.svelte
- test.js
.eslintignore
.eslintrc.json
.gitignore
.npmignore
.prettierignore
babel.config.js
package.json
prettier.config.js
README.md
rollup.config.js
yarn.lock

# 설치 가이드

1. 코드 내려받기

git clone https://github.com/nathancahill/dainte

깃허브에서 프로젝트 코드 전체를 내 컴퓨터로 내려받습니다.

cd dainte

방금 내려받은 프로젝트 폴더 안으로 이동합니다.

2. Node.js

쉬움 추천

사전 준비물

Git GitHub에서 프로젝트 코드를 내려받으려면 필요합니다.
Node.js npm 명령어를 쓰려면 Node.js가 설치되어 있어야 합니다. LTS(장기지원) 버전을 추천합니다.

npm install

package.json에 명시된 라이브러리들을 내려받아 설치합니다.

npm start

개발/실행 서버를 켭니다.

✅ 명령어 실행 후 터미널에 나타나는 주소(보통 http://localhost:3000 형태)를 브라우저에서 열어보세요.

// repository documentation

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# Dainte ![CI](https://github.com/nathancahill/dainte/workflows/CI/badge.svg)

Painless testing for Svelte components, inspired by Enzyme.

🥂 &nbsp;Test Svelte runtime and SSR simultanously<br/>
🎭 &nbsp;Zero-config compatible with Jest<br/>
🤖 &nbsp;Low-level compile options to ensure that tests match prod<br/>
🔎 &nbsp;Component "state" introspection<br/>

## Usage

### `dainte.compile`

```js
result: {
    // Compiled Svelte component class
    Component,

// Alias to component as specified or inferred name
    [name],
} = await dainte.compile(source: string, options?: {...})
```

Creates a compiled Svelte component class from a source file path.

The following options can be passed to `compile`, including [svelte.compile options](https://svelte.dev/docs#svelte_compile).
The `dev` option defaults to `true` for testing. None are required:

| option       | default                 | description                                                      |
|:-------------|:------------------------|:-----------------------------------------------------------------|
| `name`       | `'Component'`           | Name of the component class, inferred from filename              |
| `dev`        | `true`                  | Perform runtime checks and provide debugging information         |
| `immutable`  | `false`                 | You promise not to mutate any objects                            |
| `hydratable` | `false`                 | Enables the hydrate: true runtime option                         |
| `legacy`     | `false`                 | Generates code that will work in IE9 and IE10                    |
| `accessors`  | `false`                 | Getters and setters will be created for the component's props    |
| `css`        | `true`                  | Include CSS styles in JS class                                   |
| `generate`   | `'dom'`                 | Create JS DOM class or object with `.render()`                   |
| `inspect`    | `false`                 | Include `instance.inspect()` accessor                            |
| `plugins`    | `[svelte(), resolve()]` | Advanced option to manually specify Rollup plugins for bundling. |

#### Example

```js
import { compile } from 'dainte'

const { App } = await compile('./App.svelte')

const app = new App({
    target: document.body,
})
```

### `dainte.mount`

```js
result: {
    // Svelte component instance
    instance,

// Compiled JS component class
    Component,

// JSDom window and document where component is mounted.
    window,
    document,

// Alias to the Component with specified or inferred name
    [name],

// Alias to the instance with lowercase specified or inferred name
    [lowercase(name)],
}  = await mount(source: string, options?: {...})
```

Creates an instance of a component from a source file path. Mounts the instance
in a JSDom.

All `compile` options can also be passed to `mount`. Additionally, these options, including the [component initialisation options](https://svelte.dev/docs#Creating_a_component), can be provided:

| option       | default                 | description                                                      |
|:-------------|:------------------------|:-----------------------------------------------------------------|
| `html`       | `'<body></body>'`       | HTML to initiate the JSDom instance with                         |
| `target`     | `'body'`                | Render target (as a query selector, *not a DOM element* as in Svelte initialisation) |
| `anchor`     | `null`                  | Render anchor (as a query selector, *not a DOM element* as in Svelte initialisation) |
| `props`      | `{}`                    | An object of properties to supply to the component               |
| `hydrate`    | `false`                 | Upgrade existing DOM instead of replacing it                     |
| `intro`      | `false`                 | Play transitions on initial render                               |

A `svelte.tick` is awaited between mounting the instance and resolving the `mount` promise so
that the DOM is full initialized. An additional `svelte.tick` should be awaited
between updating the component and reading from the DOM.

#### Example

```js
import { mount } from 'dainte'
import { tick } from 'svelte'

const { app, document } = await mount('./App.svelte')
app.$set({ answer: 42 })
await tick()

expect(document.querySelector('#answer').textContent).toBe('42')
```

### `dainte.render`

```js
result: {
    head,
    html,
    css,
} = await dainte.render(source: string, options?: {...})
```

Wraps Svelte's server-side `Component.render` API for rendering a component
to HTML.

The following options can be passed to `render`, including [svelte.compile options](https://svelte.dev/docs#svelte_compile).
The `dev` option defaults to `true` for testing. None are required:

| option       | default                 | description                                                      |
|:-------------|:------------------------|:-----------------------------------------------------------------|
| `dev`        | `true`                  | Perform runtime checks and provide debugging information         |
| `immutable`  | `false`                 | You promise not to mutate any objects                            |
| `hydratable` | `false`                 | Enables the hydrate: true runtime option                         |
| `css`        | `true`                  | Include CSS styles in JS class                                   |
| `preserveComments` | `false`           | HTML comments will be preserved                                  |
| `preserveWhitespace` | `false`         | Keep whitespace inside and between elements as you typed it      |
| `plugins`    | `[svelte(), resolve()]` | Advanced option to manually specify Rollup plugins for bundling. |

#### Example

```js
import { render } from 'dainte'

const { html } = await render('./App.svelte')
// '<div id="answer">42</div>'
```

### `instance.inspect`

```js
variables: {
    // Snapshot of all top-level variables and imports
} = instance.inspect()
```

Compiling with `inspect: true` adds a `inspect()` function to the component instance.
Calling the function returns a snapshot object of all top-level variables and their
current values. Snapshot values are not reactive and `inspect()` must be called
again to retrieve updated values.

#### Example

```js
import { mount } from 'dainte'

const { app } = await mount('./App.svelte', { inspect: true })
const { answer } = app.inspect()
// 42
```